CVE-2026-33067 Details
Description
SiYuan is a personal knowledge management system. Versions 3.6.0 and below render package metadata fields (displayName, description) using template literals without HTML escaping. A malicious package author can inject arbitrary HTML/JavaScript into these fields, which executes automatically when any user browses the Bazaar page. Because SiYuan's Electron configuration enables nodeIntegration: true with contextIsolation: false, this XSS escalates directly to full Remote Code Execution on the victim's operating system — with zero user interaction beyond opening the marketplace tab. This issue has been fixed in version 3.6.1.
A critical remote code execution vulnerability has been identified in SiYuan versions 3.6.0 and below. The issue arises from the Bazaar marketplace rendering package metadata fields, such as displayName and description, using template literals without proper HTML escaping. This flaw allows malicious package authors to inject arbitrary HTML or JavaScript, which executes automatically when users visit the Bazaar page. SiYuan's Electron configuration, which enables nodeIntegration with contextIsolation set to false, allows this cross-site scripting vulnerability to escalate to full remote code execution on the user's operating system, requiring no interaction beyond opening the marketplace tab.
Users can update to SiYuan version 3.6.1, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 20, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/siyuan-note/siyuan/security/advisories/GHSA-mvpm-v6q4-m2pf | CISA-ADP | ExploitMitigationVendor Advisory |
| https://github.com/siyuan-note/siyuan/security/advisories/GHSA-mvpm-v6q4-m2pf | [email protected] | ExploitMitigationVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| b3log siyuan | < 3.6.1 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Mar 23, 2026 | Initial Analysis | [email protected] |
| Mar 20, 2026 | CVE Modified | CISA-ADP |
| Mar 20, 2026 | New CVE Received | [email protected] |